package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishDto;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.mapper.DishMapper;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.stream.Collectors;

@Service
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {
    @Autowired
    private DishFlavorService dishFlavorService;
    @Override
    @Transactional
    public void saveWithFlavor(DishDto dishDto) {
        this.save(dishDto);
        Long dishId = dishDto.getId();
        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors = flavors.stream().map((item)->{
            item.setDishId(dishId);
            return item;
        }).collect(Collectors.toList());
        dishFlavorService.saveBatch(flavors);
    }

    @Override
    public DishDto getByIdWithFlavor(Long id) {
        //查询菜品基本信息，从dish表查询
        Dish dish = this.getById(id);
        DishDto dishDto = new DishDto();
        BeanUtils.copyProperties(dish,dishDto);
        //查询当前菜品对应的口味信息，从dish_flavor表查询
        LambdaQueryWrapper<DishFlavor> lqw = new LambdaQueryWrapper<>();
        lqw.eq(DishFlavor::getDishId,id);
        List<DishFlavor> flavors = dishFlavorService.list(lqw);
        dishDto.setFlavors(flavors);
        return dishDto;
    }

    @Override
    @Transactional
    public void updateWithFlavor(DishDto dishDto) {
        //更新dish表基本信息
        this.updateById(dishDto);
       // 清理当前菜品对应口味数据---dish_flavor表的delete操作
        LambdaQueryWrapper<DishFlavor> lqw = new LambdaQueryWrapper<>();
        lqw.eq(DishFlavor::getDishId,dishDto.getId());
        dishFlavorService.remove(lqw);
        //添加当前提交过来的口味数据---dish_flavor表的insert操作
        List<DishFlavor> flavors = dishDto.getFlavors();
        for(DishFlavor item : flavors){
            item.setDishId(dishDto.getId());
            dishFlavorService.save(item);
        }
    }

    @Override
    public void stop(List<Long> ids) {
        LambdaQueryWrapper<Dish> lqw = new LambdaQueryWrapper<>();
        lqw.in(Dish::getId,ids);
        for (Long id : ids) {
            Dish byId = this.getById(id);
            byId.setStatus(0);
            this.updateById(byId);
        }
    }

    @Override
    public void deleted(List<Long> ids) {
        LambdaQueryWrapper<Dish> lqw = new LambdaQueryWrapper<>();
        lqw.eq(Dish::getStatus,1);
        lqw.in(Dish::getId,ids);
        int count = this.count(lqw);
        if (count > 0){
            throw new RuntimeException("在售。禁止删除");
        }
        this.removeByIds(ids);
        LambdaQueryWrapper<DishFlavor> lqw2 = new LambdaQueryWrapper<>();
        lqw2.in(DishFlavor::getDishId,ids);
        dishFlavorService.remove(lqw2);
    }
}
